Question

Determina masa de hidrogen din:
a) 36 g apa
b) 2 moli hidroxid de sodiu
c) 0,1 kmoli acid sulfuric.
Vă rog cei care va pricepeti la chimie

Answer 1

a)
1mol apa........18g.........2g H
........................36g........ x=4g H
b)
1 mol NaOH.........40g..........1gH
2 moli...................................x=2gH
c)0,1kmoli=100moli
.....1mol H2SO4........98g..........2gH
100moli H2SO4....................x=200gH